Abstract
This paper presents a simplified method of predicting the nonlinear stress-strain curves up to the tensile and compressive failures at elevated temperatures for an unidirectional and symmetric biaxial laminates. The analytical procedure is based on the classical Laminate Plate Theory (L.P.T.). By applying L.P.T. to the small stress or strain increments of the stress-strain curve, a nonlinear stress-strain curve was predicted for the laminate as a continuous line. Comparisons were made between the analytical predictions and the experimental results. A fair agreement shows that the nonlinear stress-strain curve can be estimated for various cases.
